The valley takes its name from the Brunone stream that flows through it, making a perfect bank for a richly wooded landscape, which is interspersed with small grasslands with paths leading to rustic isolated cottages.
The importance of the place is due to the bucolic landscape and the black mudstone outcrops discovered in 1973: rocks that preserve a rich fossil fauna dating back to the Upper Triassic, or more than 200 million years ago!
Among the finds are reptiles, fish, crustaceans and insects.
The most spectacular, however, is represented by a dragonfly known as Italophlebia gervasuttii, which magically preserves intact the network drawn by the ribs on its wings.
